Mitsubishi Electric Q26UD(E)HCPU User Manual page 323

Error
Error and cause
code
[SP. UNIT DOWN]
• The unsupported module is mounted.
■Collateral information
• Common information: Module No. (Slot No.)
• Individual information: -
■Diagnostic timing
• Always
[SP. UNIT DOWN]
• There was no response from the intelligent
function module/special function module when
the END instruction is executed.
• An error is detected at the intelligent function
module/special function module.
• The I/O module (including the intelligent function
module/special function module) is nearly
disconnected, removed, or mounted while the
system is running.
■Collateral information
1403
• Common information: Module No. (Slot No.)
• Individual information: -
■Diagnostic timing
• Always
[SP. UNIT DOWN]
• There was no response from the intelligent
function module when the END instruction is
executed.
• An error is detected in the intelligent function
module.
• The I/O module (including the intelligent function
module) is nearly disconnected or removed
while the system is running.
■Collateral information
• Common information: Module No. (Slot No.)
• Individual information: -
■Diagnostic timing
• Always
[CONTROL-BUS ERR.]
When I/O assignment parameters are set, the
CPU module cannot access the intelligent function
module/special function module during initial
communications. (If an error occurs, the start I/O
number of the corresponding intelligent function
1411
module/special function module is stored in the
common information.)
■Collateral information
• Common information: Module No. (Slot No.)
• Individual information: -
■Diagnostic timing
• At power-on/At reset
[CONTROL-BUS ERR.]
The FROM/TO instruction is not executable, due
to a control bus error with the intelligent function
module/special function module. (If an error
occurs, the program error location is stored in the
1412
individual information.)
■Collateral information
• Common information: Module No. (Slot No.)
• Individual information: Program error location
■Diagnostic timing
• During execution of FROM/TO instruction set
Corrective action
If an unsupported module is mounted,
remove it. When only supported modules are
mounted, the cause is a hardware failure of
the intelligent function module/special
function module, CPU module, or base unit.
Please consult your local Mitsubishi
representative.
The cause is a failure of the CPU module,
base unit, or the intelligent function
module/special function module in the access
destination. Please consult your local
Mitsubishi representative.
Reset the CPU module and run it again. If the
same error code is displayed again, the
cause is a hardware failure of the CPU
module, I/O module, intelligent function
module, END cover, branch module, or
extension module. Please consult your local
Mitsubishi representative.
Reset the CPU module and run it again. If the
same error code is displayed again, the
cause is a failure of the intelligent function
module/special function module, CPU
module, or base unit. Please consult your
local Mitsubishi representative.
Reset the CPU module and run it again. If the
same error code is displayed again, the
cause is a failure of the intelligent function
module/special function module, CPU
module, or base unit. Please consult your
local Mitsubishi representative.
APPENDICES
LED status, Corresponding
CPU status CPU
QCPU
RUN: Off/On
ERR.:Flashing/On
CPU Status:
*3
Stop/Continue
LCPU
RUN: Off
ERR.:Flashing
QCPU
CPU Status:Stop
RUN: Off
ERR.:Flashing
QCPU
CPU Status:Stop
A
321